I've been struggling with this for the past 2h. In CentOS 8 I can't find the devtoolset packages to install older gcc/g++ versions. There is no longer a scl repo for CentOS 8. I need gcc/g++ 4.9x installed along the current gcc/g++ 8.x and I need to be able to switch between the two. This was extremely easy to set up in Ubuntu, not the case in CentOS and the documentation is non-existent or I had trouble finding it.
If you wish to install an older gcc than the distro provides, you will need to compile it for source.
There is some guidance below on how to download and build an old GCC
https://bytefreaks.net/gnulinux/downgrade-gcc-on-centos-7-0-64bit-to-version-4-8-2
Found a solid path that has automated compiling and packaging gcc, as well as a guide:
Guide:
https://bobsteagall.com/2017/12/30/gcc-builder/
Github repo:
https://github.com/BobSteagall/gcc-builder
I won't copy paste what's in this person's guide as they deserve the credit. However, here's a summary of the steps:
Install your prereqs (rpm build tools, devtools for bootstrapping your environment).
Clone the repo.
Checkout a branch in the repo like the major version of GCC you want (e.g. gcc7).
In the repo, edit gcc-build-vars.sh such that it points to a version of GCC you want from http://gnu.mirror.constant.com/gcc/.
Perform the build with: ./build-gcc.sh -T | tee build.log.
Stage it: ./stage-gcc.sh.
Package it: (./pack-gcc.sh or ./make-gcc-rpm.sh -v).
Related
When I install llvm using command
bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)"
The binaries that get installed looks like following
All the binaries have version number. For e.g. llvm-objdump-15.
But the tools I use are looking for llvm-objdump, while installer installed it as llvm-objdump-15. I can create a symbolic link with name llvm-obdump, but I want to know how to install it correctly and not have version numbers in all these binaries?
I fixed it by using apt-get install
sudo apt-get install clang-format clang-tidy clang-tools clang clangd libc++-dev libc++1 libc++abi-dev libc++abi1 libclang-dev libclang1 liblldb-dev libllvm-ocaml-dev libomp-dev libomp5 lld lldb llvm-dev llvm-runtime llvm python3-clang
It did install an older version, but it was fine for my needs
The names without version numbers are controlled by the llvm-defaults package on your distribution. It picks a specific version to make the default, and only that one has un-versioned symlinks installed into the system PATH.
As a consequence, on Debian based systems only one version (controlled by the distro) is going to be available there and it may not be the one from https://apt.llvm.org/. On these systems, the recommended way to use a specific version is to add the suffix.
If you can't do that, you should install the distro-provided version using the normal process rather than the versions on https://apt.llvm.org/.
To read more details about how all of this works, you can check out the documentation for the llvm-defaults package set here: https://salsa.debian.org/pkg-llvm-team/llvm-defaults/-/blob/experimental/debian/README.Debian
I'm pretty new to linux, and I want to have installed multiple toolchains versions on my machine for testing purposes, I've read many documents on the internet refering to how to install test/experimental/unstable packages to get very new compilers packages (i.e. g++-6), but after setting Debian to find packages from test/experimental/unstable channels and install g++-6 my machine crashed, so as a new Linux user I would like to get your help to understand what is the recommended way of doing this, in my case I would like to have an easy way of testing my code against g++ (4.9, 5 and 6).
On Windows I used to download a zip package from a daily build version of mingw including g++ 5 or 6 and just setted the IDE to look for the toolchain in each folder, is that possible on Linux?
Mixing up stable/testing/unstable branch of debian is not easy and i wouldn't recommend to do it. What you could do is to download diractly the tarball, or clone the cvs and compile the compiler on your own, having each version in their own directory.
The different releases can be found here, for example.
I'm used to manually install GCC from source before on Ubuntu and it was a painful process. So I really don't want to do repeat this process. Currently, I have MinGW and GCC (4.6.2) installed on my machine. So is there an easy way to update GCC without building it entirely from source? Has anyone done it before can share me some tips?
Update using terminal:
Run the command prompt/terminal (cmd or sh).
Update the package list:
mingw-get update
After updating the package list, run:
mingw-get upgrade
When the command finishes running, all of your packages will be upgraded.
Update using the GUI version:
If you aren't used to the terminal, there is also a GUI version of MinGW called "MinGW Installation Manager", which is normally located at:
C:\MinGW\libexec\mingw-get\guimain.exe
When the GUI is open, tap Installation -> Update Catalogue. This will update the package list.
After that, tap Installation -> Mark All Upgrades. This will select all of the packages which can be upgraded.
Finally, tap Installation -> Apply Changes to apply the upgrades.
Snapshots and release builds of the MinGW http://code.google.com/p/mingw-builds/downloads/list
UPDATE: As of Nov-5-2012, MinGW includes 4.7.2 of the GCC compiler, which is the most current version. I personally will use the MinGW package, since it includes MSYS and other tools, and since it is the defacto standard, I hope that it is better supported. The only drawback is the included GDB does not include Python scripting, but I think that can be updated separately.
I don't know if you can update the GCC in MinGW, but there are alternative projects to MinGW with newer versions of GCC.
The MinGW-builds project provides a package similar to MinGW but with an updated GCC (4.7.2). I extracted the files to c:\MinGW (so I could use the same path) after moving my existing MinGW to another folder. Only MinGW has MSYS, so if you need that (I did) copy the msys folder from the original MinGW.
After installing MinGW-builds, the result of g++ --version:
g++ (Built by MinGW-builds project) 4.7.2
The latest GCC that comes with standard MinGW is currently 4.7.0. I compiled a few simple projects in Code::Blocks, and the latest wxWidgets source, and everything seems to work.
It's worth noting that MinGW-builds includes a Python script enabled version of GDB, in case you want STL pretty printer support, or other GDB Python features.
Another good choice is TDM-GCC, which is a project that hosts an impressive installer that includes an updated GCC compiler (4.7.1) and support tools. It is a standalone package. As far as I can tell, Python scripting is not supported in the GDB that comes with this package.
Finally there is the MinGW-w64 project, which is a fork of MinGW. Rubenvb, who posted an answer to this question, has good standalone packages (in the personal builds folder) based on this project which include an updated GCC (4.7.2). The included GDB seems to be Python script enabled.
if you use MSYS2
just open mingw64-console and type in:
# Update the package database and core system packages with:
pacman -Syu
# If needed, close MSYS2, run it again from Start menu. Update the rest with:
pacman -Su
I have built a more up to date GCC 4.7 (it's built within code freeze, so it should be equivalent with the release). Also, this build contains <thread> support.
32-bit
64-bit
The -gcc_linux package is what you want if you want to use it on Linux. Just extract somewhere and add the mingw??/bin directory to PATH.
PS: There's a native Windows compiler and a Windows Clang build. I suggest using Clang only with one of my GCC 4.6 builds, as it has trouble with GCC 4.7's libstd++. Extract the Clang package in the same directory as the GCC package and it will work out of the box.
The MinGW-w64 build from http://winlibs.com/ has the latest GCC version and requires no installation, just unzip the download. To upgrade you can just replace the mingw32 or mingw64 folder with the new version.
To get latest MinGW64 in Windows: https://sourceforge.net/projects/mingw-w64/?source=typ_redirect
For all platforms: https://mingw-w64.org/doku.php/download
You just need to update your g++ compiler if its not.
First problem can be solved through this:
Update using the GUI version:
If you aren't used to the terminal, there is also a GUI version of MinGW called "MinGW Installation Manager", which is normally located at:
C:\MinGW\libexec\mingw-get\guimain.exe
When the GUI is open, tap
Installation -> Update Catalogue
. This will update the package list.
After that, tap
Installation -> Mark All Upgrades
. This will select all of the packages which can be upgraded.
Finally, tap
Installation -> Apply Changes
to apply the upgrades.
2nd Problem could be that if you didn't updated the path of mingw in environment variables.
I'd like to build the latest version of gcc on a mac. I have the latest xcode but I'm looking for some of the c++0x features that are in more recent versions (the lambda functions, etc).
Are there any good step-by-step tutorials on doing this?
You should look at the Homebrew project.
Homebrew allows you to do things like this:
brew install gcc
Mac homebrew installation instructions are available here.
Add GCC support to a fresh Xcode 4.2 installation using this homebrew formula:
brew install https://raw.github.com/Homebrew/homebrew-dupes/master/apple-gcc42.rb
Upgrading from Xcode 4.1 doesn't drop existing GCC support, so this formula is only useful if you're working with a fresh 4.2+ installation.
One option is to install MacPorts and install the gcc46 package:
sudo port install gcc46
Another option is to download the source code and build it as follows:
tar xzvf gcc-4.6.0.tar.gz
cd gcc-4.6.0
./configure
make
Note that GCC 4.6.0 requires as prerequisites GMP 4.2+, MPFR 2.3.1+, and MPC 0.8.0+. If ./configure fails, it's probably because you're missing one of these (though it should give you a helpful error message in any case).
Building will take a while—likely several hours, depending on your hardware.
I would suggest building it yourself (Adam details how to do so). This will give you fine control on where to install and all the options you want to select. My experience from having multiple versions of gcc is that, if care is not taken apple's version of gcc can be damaged.
To speed up gcc installation you might want to look at --enable-languages option. If there are languages you don't need installed with the new gcc then you may not want to select them.
I would like to install a specific version of gdb and gcc with macports on mac os x leopard, not the last one, but the 6.8 for gdb. Is it possible?
It is possible. It's just convoluted and tedious. It's listed in the documentation these days.
Steps
Go to macports trac and find the package you're looking for. This is the link for subversion, which is the package I'll be using in the example.
Click the PortFile
Click Revision Log (top right)
Pour through the revisions until you find the version you're looking for. Remember the revision number.
In this example I'm looking for version 1.7 of subversion.
With that revision number noted. You need to checkout the version of that subdirectory at that revision.
cd /tmp
svn co http://svn.macports.org/repository/macports/trunk/dports/devel/subversion --revision 106629
Then cd into the folder and run the install
cd subversion
sudo port install
Then it should become selected by default. You can check with
sudo port installed subversion
The following ports are currently installed:
subversion #1.7.10_0 (active)
subversion #1.8.8_0
subversion #1.8.10_0
As I just came across this question when trying to figure out how to download an older version of curl, I thought I'd share an update:
The currently accepted answer did not work for me any longer. This is with MacPorts 2.2.0. What I did was the following.
I started following the directions located here. I ended up using the SVN method, since the first method didn't work. What I didn't realize is that I was missing a critical step.
I found another post that suggested moving the downloaded directory to /private/tmp. After doing this, I cd into the new directory and after a sudo port install I was able to install the older version.
I am on a Mac running OS X 10.8, so your mileage may vary.
This post is old.. but specifying a version is possible. For example I want to install ZeroMQ version 3.2.2 so I use:
sudo port install zmq #3.2.2
And it always helps to goto the MacPorts website and search to see if they have what you are looking for.
As far as I know it is not possible at all to install other versions than the exact version, unless there is a specific port for a certain version.
The only thing you could do is fetch the portfile of the desired version from the Macports subversion repository.
In your case only gdb 7.2 is available on the current version, no variants and no other versions - sorry :)